{"title":"Impact of Pruning Severity on the Performance of Malbec Single-High-Wire Vineyards in a Hot and Arid Region","authors":"Carina Verónica Gonzalez, Gastón Emmanuel Ahumada, Ariel Ramón Fontana, Diana Segura, Marcelo Javier Belmonte, Carla Valeria Giordano","doi":"10.1155/ajgw/6283585","DOIUrl":null,"url":null,"abstract":"<div>\n <p><b>Background and Aim:</b> The single-high-wire (SHW) system is a very productive trellis system suitable for the mechanization of cultural practices. It has been proposed as an adaptation strategy for mitigating the effects of global warming in warm and hot wine regions. The aim was to study the impact of different pruning severity treatments [16, 24 and 32 bud m<sup>−1</sup> of productive cordon and simulated mechanical pruning (SMP)] on the performance of a Malbec SHW vineyard in a hot and arid region.</p>\n <p><b>Methods and Results:</b> The vineyard performance was assessed by means of characterizing the canopy architecture, winter trunk reserves, yield, fruit and wine composition. The variation of the pruning severity affected the architecture of the shoots but did not affect the canopy total leaf area. Lower pruning severity levels increased the number of smaller shoots and decreased the proportion of the leaf area corresponding to secondary shoots. After 3 years of treatment, bud fruitfulness and winter wood reserves were not adversely affected by lowering pruning severity. In general, it was observed that the lower the pruning severity, the higher the yield. Indeed, the lowest pruning severity level (SMP) increased the number of smaller clusters with fewer and smaller berries. Moreover, we found that pruning severity did not affect the berry’s anthocyanin and volatile organic compound profiles. Additionally, reducing pruning severity slightly decreased soluble solid accumulation and alcohol content of wines without affecting colour and acidity.</p>\n <p><b>Conclusion:</b> The cultivar Malbec trellised to the SHW system in a hot and arid region is able to self-regulate between vegetative and reproductive growth, attaining maximum yield without forfeiting quality at low pruning severity levels such as it is imposed by mechanical box pruning.</p>\n <p><b>Significance of the Study:</b> These findings support growing and managing Malbec on the SHW system with mechanized pruning in hot and arid regions.</p>\n </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2025 1","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/6283585","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Australian Journal of Grape and Wine Research","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1155/ajgw/6283585","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"FOOD SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Background and Aim: The single-high-wire (SHW) system is a very productive trellis system suitable for the mechanization of cultural practices. It has been proposed as an adaptation strategy for mitigating the effects of global warming in warm and hot wine regions. The aim was to study the impact of different pruning severity treatments [16, 24 and 32 bud m−1 of productive cordon and simulated mechanical pruning (SMP)] on the performance of a Malbec SHW vineyard in a hot and arid region.
Methods and Results: The vineyard performance was assessed by means of characterizing the canopy architecture, winter trunk reserves, yield, fruit and wine composition. The variation of the pruning severity affected the architecture of the shoots but did not affect the canopy total leaf area. Lower pruning severity levels increased the number of smaller shoots and decreased the proportion of the leaf area corresponding to secondary shoots. After 3 years of treatment, bud fruitfulness and winter wood reserves were not adversely affected by lowering pruning severity. In general, it was observed that the lower the pruning severity, the higher the yield. Indeed, the lowest pruning severity level (SMP) increased the number of smaller clusters with fewer and smaller berries. Moreover, we found that pruning severity did not affect the berry’s anthocyanin and volatile organic compound profiles. Additionally, reducing pruning severity slightly decreased soluble solid accumulation and alcohol content of wines without affecting colour and acidity.
Conclusion: The cultivar Malbec trellised to the SHW system in a hot and arid region is able to self-regulate between vegetative and reproductive growth, attaining maximum yield without forfeiting quality at low pruning severity levels such as it is imposed by mechanical box pruning.
Significance of the Study: These findings support growing and managing Malbec on the SHW system with mechanized pruning in hot and arid regions.
期刊介绍：
The Australian Journal of Grape and Wine Research provides a forum for the exchange of information about new and significant research in viticulture, oenology and related fields, and aims to promote these disciplines throughout the world. The Journal publishes results from original research in all areas of viticulture and oenology. This includes issues relating to wine, table and drying grape production; grapevine and rootstock biology, genetics, diseases and improvement; viticultural practices; juice and wine production technologies; vine and wine microbiology; quality effects of processing, packaging and inputs; wine chemistry; sensory science and consumer preferences; and environmental impacts of grape and wine production. Research related to other fermented or distilled beverages may also be considered. In addition to full-length research papers and review articles, short research or technical papers presenting new and highly topical information derived from a complete study (i.e. not preliminary data) may also be published. Special features and supplementary issues comprising the proceedings of workshops and conferences will appear periodically.
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